Terms of Service

eMusic.Tools, at emusic.tools, is run by Szymon Wiatr as a sole proprietorship trading as Szymon Wiatr APROV-IT, entered in the Polish business register (CEIDG), NIP / VAT EU: 663 18 396 66. The business address is public in CEIDG and can be looked up by the NIP number on biznes.gov.pl.

The quickest way to reach us is email: contact@emusic.tools. You can also write through the Contact page. This address covers everything in these terms: questions, complaints, withdrawals and notices of illegal content. It's also the point of contact for users and for authorities under the Digital Services Act (DSA). We correspond in Polish and English.

"We" means the operator named in section 1, and "you" means the person using the service.

A consumer is a natural person who makes a contract with us for purposes not directly connected with their business or profession. The consumer rights in sections 10 and 11, and protection against unfair terms, also apply to a sole trader whose contract with us is directly connected with their business but, as the contract shows, is not of a professional nature for them, judged in particular by the business activity entered in the register.

Minutes are the unit in which stem separation is billed (section 5). The Pro plan is a monthly subscription (section 6), a top-up is a pack of minutes bought once (section 7), and a lesson is a paid online music lesson (section 8).

eMusic.Tools is a set of music tools that run in the browser: a tuner, metronome, looper, piano, ear training, audio editor, stem separation, chord, scale and progression libraries, and more. Most of them are free and don't need an account. An account saves your practice sessions and separation history and gives you free separation minutes every month.

What costs money: separation beyond the free minutes, through the Pro plan or top-ups, and lessons. The current scope and prices are on the Pricing page, and for lessons on the Lessons page.

You enter into the contract for the free tools by opening a tool, and into the contract for an account by creating one. Both run for an indefinite period, and you can end either at any time, by no longer using the tools or by deleting your account (section 4). Paid services are covered by sections 6 to 9.

You need a device with internet access and a current version of a common browser (for example Chrome, Firefox, Safari or Edge) with JavaScript and cookies enabled. Tools that listen (the tuner, the looper, recording in the audio editor) need microphone access, which your browser will ask for. Creating an account needs an email address.

Using the internet carries the usual risks, such as malware or attempts to phish login details. We never ask for your password by email.

You can create an account if you're at least 16. Paid services can be bought by adults, and by minors with the consent of a parent or guardian.

Use a real email address and keep your password to yourself. You're responsible for what happens on your account unless someone got into it through no fault of yours. If you think that's happened, change your password and write to us.

You can delete your account at any time from your profile, with the "Delete account" button. Deletion takes effect at once and can't be undone: it ends the account contract, cancels a Pro plan immediately (with no further charges and no refund for the current period) and removes any unused minutes, including minutes bought as top-ups. If you want money back through a withdrawal (section 10) or a complaint (section 11), write to us before you delete the account.

The Privacy Policy explains how we handle account data and what's left after deletion.

Stem separation, including its Karaoke Maker, Acapella Extractor and Drumless Tracks variants, is billed in minutes of audio. Before a separation starts we hold minutes for the full length of the file, and when it finishes we take only as many as the recording actually lasted, to the second. If a separation fails or is interrupted, every held minute goes back to your account, with no need to complain.

A single file can be up to 10 minutes long and up to 64 MB.

With an account you get 15 free minutes in each calendar month (counted in UTC). Unused ones don't carry over to the next month. Without signing in, separation works within a limited daily allowance.

Minutes are always spent in the same order: first the minutes for the current period (free and from the Pro plan), then minutes from top-ups.

Minutes can't be transferred to another account or exchanged for money. The exceptions are refunds on withdrawal and complaints (sections 10 and 11).

Separation is done by an artificial intelligence model, and the result depends on the recording: the mix, the file quality, the instruments. Not every recording separates cleanly, which is why the free minutes let you try it on your own files before you buy.

We keep separation results for 14 days on the free plan and 90 days on Pro, and then delete them. Download the files you want to keep. Details are in the Privacy Policy.

Pro is a subscription that renews every month. It includes: the number of separation minutes shown on the Pricing page, added with each successful payment and valid until the next one; export in WAV instead of MP3; priority in the queue when the server is busy; results kept for 90 days instead of 14; and no limit on your separation library or saved practice sessions (the free plan shows your last 5 separations and holds 3 sessions). Unused plan minutes don't carry over to the next period.

The subscription starts with the first successful payment and renews automatically every month, on the day matching the day you bought it, until you cancel. Stripe charges each month at its start, to the payment method you gave when you bought. One account can have one subscription at a time.

You can cancel at any time from your profile, with the "Cancel subscription" button. Cancellation takes effect at the end of the paid period: Pro works as usual until then, after which the account returns to the free plan and nothing more is charged. We don't refund a period that has started unless you have a right of withdrawal (section 10) or a complaint (section 11).

If a monthly payment fails, Stripe tries again, and Pro keeps working in the meantime. If the retries fail too, the subscription ends and the account returns to the free plan.

Invoices and payment history are in the billing portal, under the "Manage subscription" button in your profile. That's also where you change your card.

We may change the plan's price. We'll email you at least 30 days before the period from which the new price applies. It never applies retroactively or to a period you've already paid for, and if you don't accept it, cancel before that date.

A top-up is a one-off payment for the number of minutes shown on the Pricing page. Nothing renews and nothing more is charged. The minutes reach your account as soon as Stripe confirms the payment, and they don't expire. They're spent after the minutes for the current period (section 5).

Guitar and piano lessons are taught online by the operator in person, in Polish or English. A lesson lasts 60 minutes and its price is shown on the Lessons page. You pay for one lesson at a time, with no subscription and no bundle. You don't need an account to buy a lesson.

We agree the time by email after payment. If we can't find a time that suits you, you get the full amount back.

You can move or cancel a lesson free of charge, with a refund, if you write at least 24 hours before it. If you cancel later or don't turn up, the lesson is forfeited. If we cancel, you choose: a new time or a full refund.

Prices are shown on the Pricing and Lessons pages. They're final prices: they include VAT where it's due, and nothing is added on top.

The price of Pro and of top-ups depends on your region, which we recognise from your IP address. In Poland you pay in zloty. In the rest of the European Union, the European Economic Area, the United Kingdom and Switzerland you pay in euros. In the United States, Canada, Australia, New Zealand, Japan, South Korea, Singapore, Hong Kong, Taiwan, Israel, the United Arab Emirates, Qatar, Kuwait, Bahrain and Saudi Arabia you pay in US dollars, at a similar level. Everywhere else there's a lower price in US dollars, and if your country can't be recognised, we show that lower price. The price that binds you is the one on the payment page before you confirm.

Payments are handled by Stripe. On Stripe's payment page you choose one of the payment methods offered there and enter your billing details. Card details go straight to Stripe; we never see them. You buy Pro and top-ups while signed in, so it's clear which account the minutes belong to.

Before you pay, we ask you to accept these terms and to agree that we start providing the service straight away, before the 14-day withdrawal period is over. What happens if you withdraw depends on that agreement (section 10).

The contract is concluded when Stripe confirms the payment. We email a confirmation of the contract and the invoice to the address given at payment.

If you're a consumer, you can withdraw from a contract for the Pro plan, a top-up or a lesson within 14 days of concluding it, without giving a reason. For Pro the period runs from the first payment; the monthly renewals don't start it again.

To withdraw, send us a statement before the period ends, for example by email to contact@emusic.tools. You can use the model form in section 19, but you don't have to. We'll confirm receipt by email.

We refund within 14 days of receiving your statement, using the same payment method you used, unless you expressly agree to another. The refund costs you nothing. The minutes from the contract you withdrew from are removed from your account, and a Pro plan ends.

If you agreed that we'd start providing the service before the 14 days were up (section 9), you pay for what was provided up to the moment you withdrew, and we refund the rest. For a top-up we deduct the part of the price proportional to the minutes you've used from it. For Pro we deduct the part of the price proportional to how much of the month has passed or, if you've already used a larger share of the plan's minutes, proportional to the minutes used. For a lesson that hasn't happened yet, we refund the full price.

The right of withdrawal ends once the service has been fully provided with your agreement, if before buying you acknowledged that you'd lose it at that point. That's the case for a lesson that has taken place and for a top-up whose minutes have all been used.

We're responsible for the paid services working as these terms and the Pricing page describe. If you're a consumer and a service doesn't conform to the contract, you can ask us to bring it into conformity. If that's impossible or doesn't work, you can ask for a price reduction or, unless the lack of conformity is minor, withdraw from the contract and get your money back. These rights come from the Polish Consumer Rights Act, and these terms don't limit them.

Send complaints to contact@emusic.tools. Say what it's about (for example the invoice number or the file name), what isn't working and what you'd like us to do. We'll reply within 14 days of receiving it. If we don't reply in that time, the complaint is treated as accepted.

A failed separation doesn't need a complaint: the minutes come back on their own (section 5).

If you disagree with our answer, you can get free help from a municipal or district consumer ombudsman (rzecznik konsumentów) in Poland, or ask a regional Trade Inspection office (Inspekcja Handlowa) for mediation or turn to a permanent consumer arbitration court. Information is at prawakonsumenta.uokik.gov.pl. A consumer from another EU country can contact the European Consumer Centre in their own country.

The stem separation tool (and its Karaoke Maker, Acapella Extractor and Drumless Tracks variants) lets you upload audio files for processing. Those files go to our processing server, and if you're signed in, your jobs and separated stems are kept in your account history for the period in section 5. The audio editor processes files locally in your browser and doesn't upload them.

Your files stay yours, and you're responsible for them. By uploading a file you confirm you have the right to process it, and you authorise us to process and store it as far as needed to provide the service and for the training described below. Don't upload content that infringes copyright or other rights.

Separation is for practice, learning and working with recordings you have rights to. We claim no rights in the files you upload or in the stems we separate from them, and we don't ask for a fee, a share of earnings or a credit when you use them. If you hold the rights to the recording, for example because it's yours or the licence you have it under allows it, you can use the separated stems just as you could the original, commercially too. We can't give you rights you don't have: what you may do with someone else's recording depends on the law and on the rights in that recording.

AI training. We may use files uploaded from 1 October 2026 to train and improve our own AI models, only within the retention period in section 5. Deleting a file deletes our copy, but it does not undo a model that was already trained on it. Files uploaded earlier are not used this way. You can object at any time by writing to contact@emusic.tools, and from then on we will leave your files out. The Privacy Policy gives the details and the legal basis.

Anyone can report content they believe is illegal, including content that infringes copyright, by email to contact@emusic.tools. A notice should include: an explanation of why the content is illegal; the exact location of the content (for example its URL); the name and email address of the person reporting; and a statement that they believe in good faith that the information in the notice is accurate and complete.

We'll confirm receipt, deal with the notice without undue delay and tell the person who sent it what we decided. Notices are reviewed by a person, without automated tools.

If we remove content, block access to it or restrict an account, the person concerned gets an email explaining why. They can appeal by replying to that email, and we'll decide on the appeal within 14 days. Going to court is always possible too.

You may use the service for personal, educational and professional music-related purposes. You may not: upload illegal content; get around the limits, for example by opening several accounts for free minutes; scrape the service's content automatically or decompile its code beyond what the law allows; or interfere with the service.

If you breach these terms seriously or repeatedly, we may suspend your account or end the account contract. We'll first ask you by email to stop, unless the law or other people's safety requires us to act at once. Accounts used repeatedly to upload infringing content are closed. Section 13 covers the explanation and how to appeal.

If we close an account with a paid Pro plan or an unused top-up for any reason other than your breach of these terms, we'll refund a proportional part of the price.

All code, design, music theory content, and educational materials on eMusic.Tools are owned by Szymon Wiatr APROV-IT unless otherwise stated. You may not reproduce, redistribute, or modify our content without written permission. One exception is stated separately: the chord diagram images may be reused free of charge, including commercially, on the terms of our Image License.

The free tools and content, such as the chord and scale libraries and the articles, are provided free of charge and as they are. We work to keep them accurate and available, but we don't promise they'll always be available or free of errors.

For paid services we're liable under section 11 and the law. Towards consumers, no part of these terms should be read as excluding or limiting liability that the law doesn't allow to be excluded or limited.

Towards anyone who isn't a consumer (or a sole trader with consumer rights, section 2), we're not liable for lost profits, and our liability is capped at what you paid us in the last 12 months. The cap doesn't apply to damage caused intentionally.

The service may have interruptions, for example for maintenance. We try to keep them short.

The service develops and the tools change. We may change a paid service only for a valid reason (a change in the law, security, a change at a technology provider, new features) and at no extra cost to you. If a change significantly and negatively affects your access to the service or your use of it, we'll tell you by email in advance, and you can end the contract within 30 days and get a refund for the unused period.

We may change these terms for valid reasons: a change in the law, a change in the scope or prices of the services, a change in the technical conditions of the service, or security. Account holders get the new text by email at least 14 days before it takes effect. If you don't agree, you can cancel your plan or delete your account before that date. A change doesn't apply retroactively: a period you've paid for and top-ups you've bought are settled under the terms in force on the day you bought them.

These terms, and the contracts made through the service, are governed by Polish law. If you're a consumer, this doesn't take away the protection given to you by the mandatory rules of the country where you usually live. Disputes are decided by the courts that have jurisdiction under the general rules.

These terms are available in Polish, English and Spanish. The versions say the same thing, and if they differ, the Polish version prevails.

You can save or print these terms from this page at any time.

(complete and return this form only if you wish to withdraw from the contract)

To: Szymon Wiatr APROV-IT, NIP 663 18 396 66, contact@emusic.tools

I/We (*) hereby give notice that I/We (*) withdraw from my/our (*) contract for the provision of the following service (*): Pro plan / minutes top-up / lesson (*)

Concluded on:

Name of consumer(s):

Address of consumer(s):

Email address of the account on the service (if any):

Signature of consumer(s) (only if this form is sent on paper):

Date:

(*) Delete as appropriate.